#' Middle East and North Africa yearly data of economic growth, inflation rate,foreign direct investment and trade
#'
#' The data frame \code{Mena} contains the following variables:
#' \itemize{
#' \item{pays:}{the countries}
#' \item{ann:}{the year}
#' \item{GDPPC:}{GDP per capita growth (annual pourcentage)}
#' \item{FDI:}{Foreign direct investment, net inflows (pourcentageof GDP)}
#' \item{INF:}{Inflation, consumer prices (annual pourcentage)}
#' \item{OPEN:}{public capital}
#' }
#'
#' @docType data
#' @name  Mena
#' @usage data(Mena)
#' @format A data frame with 274 rows and 4 variables
"Mena"
